Characterization of the heavy metal pyrochlore lattice superconductor CaIr2

Neel Haldolaarachchige; Quinn Gibson; Leslie M. Schoop; Huixia Luo; R. J. Cava

doi:10.1088/0953-8984/27/18/185701

Characterization of the heavy metal pyrochlore lattice superconductor CaIr₂

Neel Haldolaarachchige, Quinn Gibson, Leslie M. Schoop, Huixia Luo, R. J. Cava

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

We report the electronic properties of the cubic laves phase superconductor CaIr₂ (T_c=5.8K), in which the Ir atoms have a pyrochlore lattice. The estimated superconducting parameters obtained from magnetization and specific heat measurements indicate that CaIr₂ is a weakly coupled BCS superconductor. Electronic band structure calculations show that the Ir d-states are dominant at the Fermi level, creating a complex Fermi surface that is impacted substantially by spin-orbit coupling.

Original language	English (US)
Article number	185701
Journal	Journal of Physics Condensed Matter
Volume	27
Issue number	18
DOIs	https://doi.org/10.1088/0953-8984/27/18/185701
State	Published - May 13 2015

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
General Materials Science

Keywords

BCS
Ir-superconductor
band structure
laves phase
pyrochlore
spinorbit coupling
weak coupling superconductor

Access to Document

10.1088/0953-8984/27/18/185701

Cite this

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title = "Characterization of the heavy metal pyrochlore lattice superconductor CaIr2",

abstract = "We report the electronic properties of the cubic laves phase superconductor CaIr2 (Tc=5.8K), in which the Ir atoms have a pyrochlore lattice. The estimated superconducting parameters obtained from magnetization and specific heat measurements indicate that CaIr2 is a weakly coupled BCS superconductor. Electronic band structure calculations show that the Ir d-states are dominant at the Fermi level, creating a complex Fermi surface that is impacted substantially by spin-orbit coupling.",

keywords = "BCS, Ir-superconductor, band structure, laves phase, pyrochlore, spinorbit coupling, weak coupling superconductor",

author = "Neel Haldolaarachchige and Quinn Gibson and Schoop, {Leslie M.} and Huixia Luo and Cava, {R. J.}",

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AU - Haldolaarachchige, Neel

AU - Gibson, Quinn

AU - Schoop, Leslie M.

AU - Luo, Huixia

AU - Cava, R. J.

PY - 2015/5/13

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AB - We report the electronic properties of the cubic laves phase superconductor CaIr2 (Tc=5.8K), in which the Ir atoms have a pyrochlore lattice. The estimated superconducting parameters obtained from magnetization and specific heat measurements indicate that CaIr2 is a weakly coupled BCS superconductor. Electronic band structure calculations show that the Ir d-states are dominant at the Fermi level, creating a complex Fermi surface that is impacted substantially by spin-orbit coupling.

KW - BCS

KW - Ir-superconductor

KW - band structure

KW - laves phase

KW - pyrochlore

KW - spinorbit coupling

KW - weak coupling superconductor

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